There are a number of books on a shelf. If one book is the 4th from the left and 6th from the right, how many books are on the shelf?

How high do you have to count before you use the letter “a” in the English spelling of the whole number?

The average age of 10 members of a committee is the same as it was 4 years ago, because an old member has been replaced by a young member. Find how much younger is the new member ?

Get total of 120 by using five zeros 0,0,0,0,0 and any one mathematical operator.
Do you ?

What does this rebus puzzle means ?

Below, you can see some coding:
January = 1017
February = 628
March = 1335
April = 145
May = 1353
June = 1064
July = 1074
August = 186

Now deciphering the way it has been coded, can you find out how September will be coded?

Which three-digit number, made of consecutive digits, like 567, is 2 less than a cube and 2 more than a square?

You are in a room with no metal objects except for two iron rods. Only one of them is a magnet.
How can you identify which one is a magnet?

I noticed one of the words in the oxford dictionary is spelled incorrectly. What about you?

Pronounced as 1 letter, And written with 3, 2 letters there are, and 2 only in me. I’m double, I’m single, I’m black blue and grey, I’m read from both ends, and the same either way. What am I?